import * as THREE from "three"
import  { OrbitControls, MapControls } from "three/examples/jsm/controls/OrbitControls";
class CurvePath {

    scene: THREE.Scene
    camera: THREE.OrthographicCamera
    renderer: THREE.WebGLRenderer
    mesh: THREE.Mesh

    controls: any
    clock: THREE.Clock = new THREE.Clock()
    T0: Date
    constructor() {
         /**
     * 创建场景对象Scene
     */
    var scene = new THREE.Scene();
 /**
     * 创建网格模型
     */
    var geometry = new THREE.Geometry(); //声明一个几何体对象Geometry
    // 绘制一个U型轮廓
    var R = 80;//圆弧半径
    var arc = new THREE.ArcCurve(0, 0, R, 0, Math.PI, true);
    // 半圆弧的一个端点作为直线的一个端点
    var line1 = new THREE.LineCurve(new THREE.Vector2(R, 200), new THREE.Vector2(R, 0));
    var line2 = new THREE.LineCurve(new THREE.Vector2(-R, 0), new THREE.Vector2(-R, 200));
    // 创建组合曲线对象CurvePath
    var CurvePath = new THREE.CurvePath();
    // 把多个线条插入到CurvePath中
    CurvePath.curves.push(line1, arc, line2);

    //分段数200
    var points = CurvePath.getPoints(200);
    // setFromPoints方法从points中提取数据改变几何体的顶点属性vertices
    geometry.setFromPoints(points as THREE.Vector2[]);
    //材质对象
    var material = new THREE.LineBasicMaterial({
      color: 0x000000
    });
    //线条模型对象
    var line = new THREE.Line(geometry, material);
    scene.add(line); //线条对象添加到场景中

    
    /**
     * 光源设置
     */
    //点光源
    var point = new THREE.PointLight(0xffffff);
    point.position.set(400, 200, 300); //点光源位置
    scene.add(point); //点光源添加到场景中
    //环境光
    var ambient = new THREE.AmbientLight(0x444444);
    scene.add(ambient);
    /**
     * 相机设置
     */
    var width = window.innerWidth; //窗口宽度
    var height = window.innerHeight; //窗口高度
    var k = width / height; //窗口宽高比
    var s = 150; //三维场景显示范围控制系数，系数越大，显示的范围越大
    //创建相机对象
    var camera = new THREE.OrthographicCamera(-s * k, s * k, s, -s, 1, 1000);
    camera.position.set(200, 300, 200); //设置相机位置
    camera.lookAt(scene.position); //设置相机方向(指向的场景对象)
    /**
     * 创建渲染器对象
     */
    var renderer = new THREE.WebGLRenderer();
    renderer.setSize(width, height); //设置渲染区域尺寸
    renderer.setClearColor(0xb9d3ff, 1); //设置背景颜色
    document.body.appendChild(renderer.domElement); //body元素中插入canvas对象

    // 渲染函数
    function render() {
      renderer.render(scene, camera); //执行渲染操作
    }
    render();

    var controls = new OrbitControls(camera,renderer.domElement);//创建控件对象
    controls.addEventListener('change', render);//监听鼠标、键盘事件
  
    }
}

export {CurvePath}
